Knowledge in this context talks about spiritual understanding. It is the ability to be spiritually alert; to understand spiritual principles. This is given by the Holy Ghost.
here’s a reason God said in His word that you should not be worried about anything. This is because He had already made good plans for you before you were born. From the beginning of creation, all that you would ever need was created, and they were created for you.
Your new life is a reigning one. You have been empowered by the grace of God and by the gift of righteousness to reign in this life: reign over sicknesses and diseases.